They are called ベホマの光 (Behoma no Hikari or Light of Behoma) with ベホマ being the Japanese name of one of the healing spells in Dragon quest. 

The bottom of the page says 大日本ベホマの会 or "Great Japan Behoma association."

They are B6 and fully paper. There is a little bit of page yellowing, but they are in excellent condition. When searching these in Gemini, it said they are likely about 30 year old pamphlets distributed at Comiket when new dragon quest games came out, designed to look like official accompanying media for the games. They have various short comic strips and illustrations inside and have a very high quality vintage feel. I would love to track down the rest of this collection if possible, but I cannot find anything about them. 

Whenever I google ベホマの光 I just get a scene from Adventure of Dai, so it really pollutes the search results, but I also cannot find anything about 大日本ベホマ会 or anything when searching these with 同人, ムック,"Comiket" or 同人誌. Any info would be greatly appreciated. 

Also, I found these in a used dojin shop in akihabara, but no these ones are not 18+. I like to search dojin shelves for SFW Dojinshi (yes they do exist and do get mixed in with the NSFW stuff) and Fanzines of IPs I like, for collecting. 

Does anyone know anything about these old SFW Dragon Quest Doujinshi/fanzines? I found them at Mandarake Complex in Akiba but cannot find anything about them online. Could they be lost media?